Pension and Postretirement Plans (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 02, 2011	Jan. 03, 2010
Defined Benefit Plan Disclosure [Line Items]
Early retirement programs expense	$ 634	$ 0	$ 64,541
Net pensions credit (expense)	1,677	(16,492)	(49,854)
Total recognized in other comprehensive income (before tax effects)	(18,395)	126,471	130,492
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	27,619	26,976	29,214
Interest cost	60,033	60,329	56,994
Plan amendment	2,776	5,295
Expected return on assets	(95,983)	(95,340)	(98,780)
Amortization of transition asset	0	(29)	(42)
Amortization of prior service cost (credit)	3,605	4,201	4,505
Recognized actuarial loss (gain)	0	0	40
Net periodic benefit for the year	(4,726)	(3,863)	(8,069)
Early retirement programs expense	634	0	64,541
Special termination benefits	0	5,295	0
Recognition of prior service cost	0	2,369	0
Net pensions credit (expense)	(4,092)	3,801	56,472
Current year actuarial (gain) loss	7,046	(126,568)	(141,362)
Amortization of transition asset	0	29	42
Amortization of prior service cost	(1,463)	(6,570)	(4,505)
Recognized actuarial (loss) gain	0	0	(40)
Total recognized in other comprehensive income (before tax effects)	5,583	(133,109)	(145,865)
Total recognized in total (benefit) cost and other comprehensive income (before tax effects)	1,491	(129,308)	(89,393)
Supplemental Executive Retirement Plan (SERP) [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,655	1,381	1,334
Interest cost	4,342	4,244	4,128
Plan amendment	369	0	0
Amortization of prior service cost (credit)	260	406	446
Recognized actuarial loss (gain)	1,411	1,068	1,676
Net pensions credit (expense)	8,037	7,099	7,584
Current year actuarial (gain) loss	9,059	2,656	2,778
Amortization of prior service cost	(260)	(406)	(446)
Recognized actuarial (loss) gain	(1,411)	(877)	(1,676)
Total recognized in other comprehensive income (before tax effects)	7,388	1,373	656
Total recognized in total (benefit) cost and other comprehensive income (before tax effects)	15,425	8,472	8,240
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	2,872	3,275	3,871
Interest cost	3,063	3,934	4,168
Plan amendment	0	(6,336)
Amortization of prior service cost (credit)	(5,650)	(5,026)	(4,607)
Recognized actuarial loss (gain)	(1,921)	(2,032)	(3,128)
Net periodic benefit for the year	(1,636)	151	304
Curtailment gain	0	(8,583)	(8,353)
Net pensions credit (expense)	(1,636)	(8,432)	(8,049)
Current year actuarial (gain) loss	(55)	(3,073)	10,673
Current year prior service credit	0	(6,336)	(1,399)
Amortization of prior service cost	5,650	5,026	4,607
Recognized actuarial (loss) gain	1,921	2,032	3,128
Curtailment loss (gain)	0	4,953	(719)
Total recognized in other comprehensive income (before tax effects)	7,516	2,602	16,290
Total recognized in total (benefit) cost and other comprehensive income (before tax effects)	$ 5,880	$ (5,830)	$ 8,241